Notes: As the above chart shows when tread brakes were used drum brakes were not. When the Air operated drum brakes were used no external brake actuator or brake could be seen. The entire brake system was internal to the truck. (A small air cylinder operated a drum brake at the drive shaft end of the axle gear housing - two per truck.) When the GE Electric Actuator was used a vertical cylinder was attached to the outside of the truck main tube frame. This device (an electric solenoid) operated a spring loaded drum brake attached to the motor drive shaft. The cylinder's top and bottom was held together with four external bolts. When the Westinghouse Electric Actuator was used an "automotive starter motor w/solenoid" looking device (actually one large solenoid) was attached to the outside of the truck tube frame. Like the GE Actuator this device operated a spring loaded drive shaft drum brake. Two brake actuators were required for each truck on GE or Westinghouse trucks. (We can supply the GE Actuator; we cannot supply the Westinghouse Actuator.)

**Because Los Angeles operated on narrow gage track the ERPCC had to develop another truck. This eventually became known as the Bl. Although the design elements of this truck were similar to the B2, in fact it looked more like a B3, it would not be historically correct to indicate that Los Angeles used the B2.

Acknowledgement: Thanks is due to Scott Ruffinen for the above Clark Truck Equipment listing. Thanks is also due to James C Hogan who provided the Washington portion of the above list. We welcome any additional information you may wish to provide. We will incorporate it into future revisions.